/* 多选模式样式 - 蓝色系主题 */
.item-checkbox {
    position: absolute;
    top: 15px;
    left: 15px;
    z-index: 10;
    transform: scale(1.2);
}

.cart-item {
    position: relative;
    overflow: hidden;
}

.multi-select-actions {
    display: flex;
    gap: 15px;
    margin-left: auto;
    align-items: center;
    background: #e3f2fd;
    padding: 12px 20px;
    border-radius: 10px;
    box-shadow: 0 3px 8px rgba(66, 133, 244, 0.15);
}

.btn-multi-select {
    background: linear-gradient(135deg, #64b5f6 0%, #42a5f5 100%);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    font-size: 15px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 10px rgba(66, 133, 244, 0.2);
}

.btn-multi-select:hover {
    background: linear-gradient(135deg, #42a5f5 0%, #1e88e5 100%);
    box-shadow: 0 6px 15px rgba(66, 133, 244, 0.3);
    transform: translateY(-3px);
}

.btn-select-all {
    background: linear-gradient(135deg, #4caf50 0%, #2e7d32 100%);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    font-size: 15px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 10px rgba(46, 125, 50, 0.2);
}

.btn-select-all:hover {
    background: linear-gradient(135deg, #43a047 0%, #1b5e20 100%);
    box-shadow: 0 6px 15px rgba(46, 125, 50, 0.3);
    transform: translateY(-3px);
}

.btn-checkout-selected {
    background: linear-gradient(135deg, #ff7043 0%, #f4511e 100%);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    font-size: 15px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 10px rgba(244, 81, 30, 0.2);
}

.btn-checkout-selected:hover {
    background: linear-gradient(135deg, #f4511e 0%, #d84315 100%);
    box-shadow: 0 6px 15px rgba(244, 81, 30, 0.3);
    transform: translateY(-3px);
}

.btn-cancel {
    background: linear-gradient(135deg, #78909c 0%, #546e7a 100%);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    font-size: 15px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 10px rgba(84, 110, 122, 0.2);
}

.btn-cancel:hover {
    background: linear-gradient(135deg, #546e7a 0%, #455a64 100%);
    box-shadow: 0 6px 15px rgba(84, 110, 122, 0.3);
    transform: translateY(-3px);
}

/* 选中状态效果 */
.cart-item-checkbox:checked + .cart-item {
    background-color: #e3f2fd;
    border: 2px solid #64b5f6;
    box-shadow: 0 0 0 3px rgba(100, 181, 246, 0.3);
}

/* 多选模式标题 */
.multi-select-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: #1a237e;
    margin-right: 15px;
}